123

June 25' 8º a.m           Curcurbita — with one side to tip once   

1879.   very lightly touched with dry Caustic — perpendicularly  

            down over water.— most of radicle less than 1/2 inch  in length

                After about 5' tips immersed in water

(1) Caustic 12º .30' ie. 4º. 30' well curved from black mark very small (4º. 50 in 8º 50' bent at rt angles ∠ 25th 8º a.m tremendously grew at rt. angle

Black mark— not black

(2) C. 12º 30' like (1) 4º 50' almost rt angle ∠

 very pale— not 1/2 mm in      

26th 8º. am like (1) length.       

(3) C. do. curved almost rt. angle 4º 50 right angle ∠

   26' 8º a.m — greatly inclined

(4) C. do well curved 4º 50' right angle ∠ 26' 8º am now only very slightly curved, viz 15º from vertical decreased

(5) C. do well curved 4º 50' almost right a. — (26th 8º. do.) ∠ 5 ∠3

6. C. 12. 30 quit straight no black mark. accidentally not touched. .4º 50 do — good to work in the accident.— 26th 8º am straight

(7) C. do— (slightly) curved 4º 50' very slightly curved; discolouration almost equally all round, but rather deeper on side from which apex bend —(26th 8º a.m apex now straight.— whole radicle somewhat curved from mark decreased

(8) C. do.— slight do 4º 50; curved at about 45º from perpendicular ∠ 25' 8º a.m. like yesterday 53º from vertical increased

(9) C. do only slightly just perceptibly curved— 4º 50' tip curved at 45º— Black mark excessively minute 25 8º a.m about 45º. same    ∠

(10) C do slightly curved 4º 50' very slightly curved, black mark only just visible through strong Lens. 25 .8º .am. 37º from vertical increased

(11) C — do (very short & O young straight) 4º 50'— curved at about 40º from perpendicular ∠ 26th 8º. 20º from vertical radicle very short had not grown well decreased

12. C. do plainly curved. ) 4º 50' slightly curved 26th 8º a.m— almost straight.    O

  Radicles have all grown immensely

9 Control specimens. 12º 30' all 9 controls perfectly straight— excellent case 4º 50' one has become somewhat curved from seed & 2 others on tips alone a little curved. 26th 8º a.m. only one has radicle itself curved, but owing to growth of Hypocotyl — 2 other irregular

6 plainly 4 slightly 1 0

 After 24hr. radicles had increase wonderfully in length omitting the [illeg] tally [illeg] during, of the the curvature of

}

decreased 3

increased. 2

about the sa 5

123v

June 24. 1879  Cucurbita ovifera— young radicles only 1. to .15 in length  

4º 35' P.m.       geotropically bent down at right angles— now suspended  

Jar E    water with spines downwards,   & touched once on one side with dry caustic

}

(1) Caustic 

(2) caustic

(3) (0)

(4) (0)

25th 8º a.m. no Bending— too much blackened too low down.   (over)

124

Jun 20th  Cucurbita ovifera — Radicles — germinated on damp peat — 1879  placed on chimney-piece — apex touched only once with dry Caustic on one side— at 4º 50' P.m —Suspended over water & well splashed., a few minutes after Caustic — All touched laterally

(1) Caustic  10º P.m Touched all again with Caustic same side

(2) Caustic 9. 50 P.m. a little curved (21st 7º 45' a.m tip curved to black

(3) Caustic

(4) Caustic 9º 50' considerably curved from mark. (21' 7º 45' tip curved to mark

(5) Caustic 21st 7º 45 tip like like 4)

(too much Caustic put on at 10º P.m last night)

(6) Caustic 21' 7º 45 tip. like (4)

(7) Caustic 9º 50' curved 21' 7º 45 tip like

(8) Caustic 21' 7º 45 tip like 4)

(9) Caustic 21' 7% 45 a.m tip like 4)

(10) Caustic — seed radicle brown & sick.

(over)

124v

8 6 Control no Caustic.— 21st. 7º 45'. a.m— Five of them quite straight, one with tip Hooked spontaneously— 2 of the 5 with Sachs curvature strongly marked.

(After 4 h. 50' 2 were curved from Black mark & the 1 freshily put on more caustic & too much. & tips became bent to brnt side on the following morning.)

125

Jun 21st 1879 8º a.m. Curcurbita ovifera.— touched one on one side with

caustic suspended vertically over water  (3

at 1º P.m no effect — at 4h 30' immersed radicle in water

(1) Caustic 4º 30' Black mark hardly visible            

(22d 8º a.m no difference all grown wildly— Those without caustic are not geotropic or hardy at all— —Most of them extended more or

(2) Caustic 4º 30' black all round tips so excessively thin    less horizontally — owing to the curvature of the make note

 (I have made note &put in Portfolio)

Hyopcotyl. as it grows—

(3) Caustic 4º 30' a trace of curvature

(4) Caustic 4º 30' Black mark hardly visible

(5) Caustic 4º 30' injured all round

(6) Caustic 4º 30' black all round

6 Control radicles. (all straight)

21' 4º 30 P.m.. The tips of these long radicles so thin that caustic affects the whole thickness. There was only trace of curvature in one case